#include <stdio.h> 
#include <stdlib.h> 
#include <math.h>
 
int main(int argc, char* argv[]){ 
    if(argc<2){ 
        fprintf(stdout, "Uage: %s number\n", argv[0]); 
        return 1; 
    } 
    double inputValue = atof(argv[1]); 
    double outputValue = sqrt(inputValue); 
    fprintf(stdout, "The square root of %g is %g\n",inputValue, outputValue); 
    return 0; 
} 